My bf wants a baby eventually. I'm having mixed feeling about it because I already have 3 and they are all under 5. I'm 27 and honestly I nvr really wanted to have any more kids because I'm pushing 30 and my kids are close in age. He doesn't have any kids of his own and I understand that, I dnt want to seem selfish but idk if I am really ok with it. He also told me that twins run in his family. Dealing with one kid is different but having two at the same time...idk if I can deal. I'm open to the idea of having a kid with him because
 he doesn't have any biological kids, but the possibility of having twins scares me. Should I just go for it or tell him how I feel about the possibility. I dnt want to hurt his feelings. He's a great parent and my kids love him. HELP PLEASE